1/* 2 * Copyright (c) 2024-2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16function foo1() { 17 const NaN = 10; 18 const nan = 20; 19 const Infinity = "Inf"; 20 21 let NaN = ""; 22 let Infinity = test(); 23 let undefined 24}; 25 26/* @@? 21:9 Error TypeError: Variable 'NaN' has already been declared. */ 27/* @@? 22:9 Error TypeError: Variable 'Infinity' has already been declared. */ 28/* @@? 22:20 Error TypeError: Unresolved reference test */ 29/* @@? 23:9 Error SyntaxError: Identifier expected, got 'undefined'. */ 30/* @@? 24:1 Error SyntaxError: Variable must be initialized or it's type must be declared. */ 31